Например:
Каталог C:/, поэтому шаблон будет C:/* (*)
Первый каталог, возвращенный методом, будет C:/First
Если я снова вызову этот метод с путем, будет возвращена новая папка, например C:/Second, и если я получу все каталоги, которые смогу, DirectorySearcher запустится с самого начала, но этого не произойдет.
Источник: https://github.com/TheMakarik/solid-zip ... earcher.cs
Исходный код:
P.S RootDirectory это просто поддельный каталог (sz/), содержимое которого должно возвращать логические диски (а в моей реализации проводника - несколько дополнительных папок)
Код: Выделить всё
namespace SolidZip.Services.ExplorerServices;
internal sealed class DirectorySearcher(
ILogger logger,
IDirectoryProxy directory,
IOptions explorerOptions) : IDirectorySearcher
{
private const string FoundDirectoryLogMessage = "Found directory {Path} for the {Directory} by pattern {Pattern}";
private const string SearchingInRootDirectoryLogMessage = "Searching in root directory with pattern: {Pattern}";
private const string PatternNotFoundLogMessage = "Pattern not found in directory: {Directory}, pattern: {Pattern}";
private const string PatternStartsWithDirectoryLogMessage = "Pattern starts with directory, trimming pattern. Original: {OriginalPattern}, Trimmed: {TrimmedPattern}";
private const string ClearingFoundDirectories = "Clearing '_alreadyFoundDirectoreis', every directory may will be shown again, content before: {content}";
private const string DirectorySearcherState = "DirectorySearcherState: AlreadyFoundDirectoreis: {directoreis}, LastPath: {path}, CurrentPath: {currentPath}";
private string _lastPath = string.Empty;
private readonly List _alreadyFoundDirectories = new(5);
public FileEntity GetDirectory(string path, string pattern)
{
logger.LogTrace(DirectorySearcherState, _alreadyFoundDirectories, _lastPath, path);
if (path != _lastPath && _alreadyFoundDirectories.Any())
ClearFoundDirectories();
if (TryTrimPatternByExistingDirectory(ref pattern))
logger.LogDebug(PatternStartsWithDirectoryLogMessage, path + pattern, pattern);
if (path.StartsWith(explorerOptions.Value.RootDirectory))
return GetDirectoryFromRoot(path, pattern);
var foundDirectory = SearchDirectories(path, pattern)
.FirstOrDefault(directoryPath => !_alreadyFoundDirectories.Contains(directoryPath) && directoryPath != path);
if (foundDirectory is null)
{
logger.LogWarning(PatternNotFoundLogMessage, path, pattern);
//Directory is possible empty, must to check it
if (!directory.EnumerateDirectories(path).Any())
return new FileEntity(path, IsDirectory: true);
if (!_alreadyFoundDirectories.Any())
{
ClearFoundDirectories();//Try clear and reshow
GetDirectory(path, pattern);
}
return new FileEntity(string.Empty, IsDirectory: true);
}
logger.LogDebug(FoundDirectoryLogMessage, foundDirectory, path, pattern);
_alreadyFoundDirectories.Add(foundDirectory);
_lastPath = path;
return new FileEntity(foundDirectory, IsDirectory: true);
}
private void ClearFoundDirectories()
{
logger.LogInformation(ClearingFoundDirectories, _alreadyFoundDirectories);
_lastPath = string.Empty;
_alreadyFoundDirectories.Clear();
}
private FileEntity GetDirectoryFromRoot(string path, string pattern)
{
var searchPattern = GetSearchPattern(path, explorerOptions.Value.RootDirectory);
if (string.IsNullOrEmpty(searchPattern) || searchPattern == Path.DirectorySeparatorChar.ToString())
return GetFirstRootDirectory();
logger.LogTrace(SearchingInRootDirectoryLogMessage, searchPattern);
foreach (var drive in directory.GetLogicalDrives())
{
var foundDirectory = SearchDirectories(drive, searchPattern)
.FirstOrDefault(directoryPath => !_alreadyFoundDirectories.Contains(directoryPath));
if (foundDirectory is null)
continue;
logger.LogDebug(FoundDirectoryLogMessage, foundDirectory, path, pattern);
_alreadyFoundDirectories.Add(foundDirectory);
return new FileEntity(explorerOptions.Value.RootDirectory + foundDirectory, IsDirectory: true);
}
logger.LogWarning(PatternNotFoundLogMessage, path, pattern);
throw new DirectoryNotFoundException($"Directory not found in root for path: {path}, pattern: {pattern}");
}
private FileEntity GetFirstRootDirectory()
{
var firstDrive = directory.GetLogicalDrives().First();
logger.LogDebug(FoundDirectoryLogMessage, firstDrive, explorerOptions.Value.RootDirectory, "root");
return new FileEntity(firstDrive, IsDirectory: true);
}
private IEnumerable SearchDirectories(string path, string pattern)
{
var searchPattern = string.IsNullOrEmpty(pattern) ? "*" : pattern + "*";
return directory.EnumerateDirectories(path, searchPattern, new EnumerationOptions()
{
IgnoreInaccessible = true,
MatchCasing = MatchCasing.CaseSensitive,
});
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private static string GetSearchPattern(string fullPattern, string rootPattern)
{
return fullPattern.Length 0; i--)
{
var potentialDirectory = pattern[..i];
if (!directory.Exists(potentialDirectory))
continue;
pattern = pattern[i..];
return true;
}
return false;
}
}
Подробнее здесь: https://stackoverflow.com/questions/797 ... ed-folders
